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Tomsk scientists created fast sensors based on organic molecules

Scientists at Tomsk Polytechnic University together with colleagues from the University of Chemistry and Technology (Prague, Czech Republic) have created ultrasensitive sensors based on gold and with the use of organic compounds. These devices can detect quickly and accurately even a small amount of a substance in various environments, for example toxic heavy metals or molecules which are signs of a disease, said Pavel Postnikov, a member of the Research School of Chemistry and Applied Biomedical Sciences of TPU.
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At the heart of the multilayered sensor is a nanoscale lattice made of polymer. A thin gold film is deposited on the lattice. The surface of the film is then modified with organic compounds that would interact with the molecules of the substance sought. Some compounds can selectively «capture» heavy metals, others — foreign DNA, some interact well with fatty molecules in the blood.

Such devices would be useful not only for the study of harmful substances, but also for the search for infectious diseases in places crowded with people, Postnikov explained.

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